Staurastrum retusum var. boreale
Staurastrum retusum var. granulatum
Staurastrum retusum var. hians
Staurastrum retusum var. punctulatum
Staurastrum retusum var. nitidulum
Staurastrum retusum var. angulatum
Staurastrum retusum var. concavum
Staurastrum retusum f. hians